Year	Number
1996	10.1063833236694
1998	9.57446765899658
2000	6.87830686569214
2002	12.6984128952026
2003	16.0804023742676
2004	18.9320392608643
2005	20.8737869262695
2006	21.2560386657715
2007	16.425121307373
2008	15.384614944458
2009	11.8483409881592
2010	10.9004735946655
2011	14.6919431686401
2012	18.4834117889404
2013	14.2180099487305
2014	11.4285717010498
2015	10.4761905670166
2016	18.5714282989502
2017	13.3333330154419
2018	11.3207550048828
2019	10.8490562438965
2020	10.3773584365845
2021	4.71698093414307
2022	2.8301887512207